David Filo, a Yahoo co-founder and "chief Yahoo," has been nominated to return to the company's board of directors after an absence of 18 years.

Filo, who co-founded the Web portal in 1995 with former CEO Jerry Yang and previously served on the board from its founding until February 1996, was among three nominees as new board members announced Wednesday. The other two nominees are investor Charles Schwab and H. Lee Scott Jr., former chief executive officer of Walmart.

"As a co-founder and longtime Chief Yahoo, Filo is the heart and soul of the company and in re-joining the board, he adds 19 years of deep and personal knowledge of Yahoo's business and culture to the conversation," Yahoo CEO Marissa Mayer said in a statement.

Filo is credited with co-creating the company's Internet navigational guide in 1994. After Yang resigned as Yahoo CEO and from its board in 2012, Filo stayed on, serving as a key technologist directing the technical operations behind the company's network of Web properties.

Shareholders will vote on the nominees at the company's annual meeting on June 25.